US Patent Issued to Hewlett-Packard Development on April 22 for "Toner particle with core particle and fine particles" (Japanese Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,282,294, issued on April 22, was assigned to Hewlett-Packard Development Co. LP (Spring, Texas).

"Toner particle with core particle and fine particles" was invented by Akinori Terada (Yokohama, Japan), Takahiro Danno (Yokohama, Japan) and Osamu Ieda (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A toner particle includes a core particle including a binder resin, and a plurality of fine particles that are smaller than the core particle and that are attached to a surface of the core particle. The fine particles include silica fine particles, and inorganic fine particles having a band gap energy of 2.5 to 7.0 eV and a relative permittivity ...